Hi, I have an old "gloworm Hideaway 50" central heating gas boiler which is now pretty ancient. The problem is I can get hot water ok, but no heat to the radiators - I have felt the pipes by the boiler and they are boiling hot right up to the pump (then it goes cold)...I have changed between the 3 pump settings but to no avail. Does anyone know where I can get a new pump from and how much it should cost me to get a plumber in to change the pump. I don't know what type of pump it is - any ideas (Serial Number/Type etc..) Help would be greatly appreciated - Thank you.